Q-Q plot equivalent for discrete variable?

bradyj7

Hello,

You can use a Q-Q plot to visually test if 2 continuous variables are from the same distribution and you get a straight line.

Is there a way to visually test if 2 discrete variables are from the same distribution? Also is there a way to test it mathematically?

Thanks

MarneMath

You can do a Q-Q plot for discrete data, but it's a bit more tricky, i'll try to find a source for you.

bradyj7

Thanks

bradyj7

Hi there,

Apart from using a Q-Q plot is there any other way to test if two variables have the same distribution?

Thanks

DrDu

A chisquare test?

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